Decorative louver



FIG. 1 is a perspective view of a decorative louver showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a partial bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a side elevational view thereof;

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a decorative louver, substantially as shown and described. 